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Solved
List balanced primes
A balanced prime of order is one that equals the average of the primes before it and the primes after it. For example, 79 is ...
2 days ago
Solved
Determine whether a number is a seesaw number
Cody Problem 60957 dealt with balanced primes. In that case, balance was measured in terms of the average of primes around a giv...
3 days ago
Solved
Evaluate Deterministic Finite Automata on String
Given a Deterministic Finite Automata (DFA) and a string, determine whether or not the DFA will accept when ran on the string. A...
3 days ago
Solved
Determine if LTI system with feedback control is stable
Linear timeiinvariant systems can be represented by the differential equation , where is an matrix, is an vector representing...
3 days ago
Solved
List numbers that cannot be expressed as the sum of two primes
The Goldbach conjecture claims that even numbers greater than 2 can be expressed as the sum of two prime numbers. What about the...
3 days ago
Solved
BLOCK x3 (Version 4)
Always in this series ( <http://www.mathworks.com/matlabcentral/cody/problems/2451-block-x3-version-1/ 2451>, <http://www.mathwo...
4 days ago
Solved
BLOCK x3 (Version 3)
An extension to problems <http://www.mathworks.com/matlabcentral/cody/problems/2451-block-x3-version-1/ 2451> (by me) and <http:...
4 days ago
Solved
BLOCK x3 (Version 2)
An extension to problem 2451 ( <https://www.mathworks.com/matlabcentral/cody/problems/2451-block-x3-version-1> ). It is based...
4 days ago
Solved
BLOCK x3 (Version 1)
<https://play.google.com/store/apps/details?id=com.noodlecake.blockblock BLOCK x3> is a simple, fun and relaxing puzzle game. ...
4 days ago
Solved
Maximum Intra-Vector Swaps
This Challenge, based upon a contest in which Rokicki came in 2nd, is to find sequences containing 1:N that require maximum iter...
5 days ago
Solved
GJam March 2016 IOW: Passwords and the Block Set
This Challenge is derived from <http://code.google.com/codejam/contest/8274486/dashboard#s=p3 GJam March 2016 Annual I/O for Pas...
5 days ago
Solved
Easy Sequences 55: "Ugly" Rectangles?
A positive integer is called a regular number, if and only if there exist a non-negative integer , such that . For some reason...
7 days ago
Solved
Neural Net: Calculate Perceptron
This challenge is to calculate the Neural Net Perceptron value,P, given X, WH, and WP using ReLU on the hidden layer. This examp...
7 days ago
Solved
Double the 2x2 Matrix
In this challenge, you are given a predefined 2x2 matrix called x. Your task is to multiply every element in this matrix by 2 an...
7 days ago
Solved
Perform Rubik's Cube Moves
A standard Rubik's Cube is shown in 3-D and also unfolded to identify the specific Tile-face numbering. The faces are White-U...
8 days ago
Solved
Easy Sequences 69: Radix Economy of Factorials
The Radix Economy of a number in a particular base is the number of digits needed to express it in that base, multiplied by the ...
8 days ago
Solved
Easy Sequences 68: Factorial Rectangles
I'll celebrate my comeback to Cody with this one easy problem... ---------------- The rectangle below is special: ...
8 days ago
Solved
Easy Sequences 66: Fractional Part of Sum of Consecutive Powers over a Prime
Given three postive integers, , and , create the function , defined as follows: Where is the th prime and the s...
9 days ago
Solved
Easy Sequences 117: Fractional Part of Cube Roots
The fractional part function of a positive real number , denoted as , is defined as: , where , is the floor of . Thus, , and . ...
9 days ago
Solved
Legendary NBA Playmaker
Write a function that returns a char array containing the name and surname of a famous NBA player known for his spectacular pass...
9 days ago
Solved
Easy Sequences 65: Fractional Part of Square Roots
The fractional part function of a positive real number , denoted as , is defined as: , where , is the 'floor' of . Thus, , and ...
9 days ago
Solved
Easy Sequences 64: Base-14 Arithmetic Function
For an integer , the base-14 arithmetic function, , is defined as follows: Convert to base-14, using the letters '' for digits...
10 days ago
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Easy Sequences 63: Base-63 Arithmetic Functions
In this exercise we are required to implement 7 basic 'unsigned integer' arithmetic functions in base-63: to63(x) - convert...
10 days ago
Solved
Easy Sequences 62: Sum of Omega-3 Function
For an integer , the prime big omega function, , is defined as the total number of prime factors of . If , since , therefore . ...
11 days ago
Solved
Easy Sequences 58: Curious Prime-Rational Functions
For some prime numbers and where , a rational function , is defined as follows: . Using the output , another rational functi...
11 days ago
Solved
Easy Sequences 49: Prime Little Omega Function
For an integer , the prime little omega function, , is defined as the total number of distinct prime factors of . So, if , sinc...
12 days ago
Solved
Easy Sequences 48: Prime Big Omega of Factorial Sequence
For an integer , the prime big omega function, , is defined as the total number of prime factors of . So, if , since , therefor...
12 days ago
Solved
Easy Sequences 47: Boxes with Prime Edges
This is related to problem "Easy Sequences 41: Boxes with Integer Edges". However, here we will be investigating a smaller-sized...
12 days ago
Solved
Easy Sequences 46: Semi-prime Leap Year Pairs
A semi-prime is a positive integer that has only and exactly prime factors. Here is a list of the first few semi-primes:. We...
12 days ago
Solved
Easy Sequences 45: Second Derivative of Inverse Polynomial Function
The inverse of a function, is the function , that reverses . That means that if , then . For example, the function to convert ce...
13 days ago
